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Diffstat (limited to 'plugins/jetpack/_inc/build/lazy-images/js/lazy-images.min.js')
| -rw-r--r-- | plugins/jetpack/_inc/build/lazy-images/js/lazy-images.min.js | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/plugins/jetpack/_inc/build/lazy-images/js/lazy-images.min.js b/plugins/jetpack/_inc/build/lazy-images/js/lazy-images.min.js new file mode 100644 index 00000000..29caeabf --- /dev/null +++ b/plugins/jetpack/_inc/build/lazy-images/js/lazy-images.min.js @@ -0,0 +1,16 @@ +/* Do not modify this file directly. It is compiled from other files. */ +/* globals IntersectionObserver, jQuery */ +var jetpackLazyImagesModule=function(t){function e(){if(o=document.querySelectorAll("img[data-lazy-src]"),u=o.length,s&&s.disconnect(),"IntersectionObserver"in window)for(s=new IntersectionObserver(r,a),h=0;h<o.length;h++)c=o[h],c.getAttribute("data-lazy-loaded")||s.observe(c);else n(o)}function n(t){var e;for(e=0;e<t.length;e++){i(t[e])}}function r(t){var e;for(0===u&&s.disconnect(),e=0;e<t.length;e++){var n=t[e];n.intersectionRatio>0&&(u--,s.unobserve(n.target),i(n.target))}}function i(t){var e=t.getAttribute("data-lazy-src"),n=t.getAttribute("data-lazy-srcset"),r=t.getAttribute("data-lazy-sizes");e&&(t.classList&&t.classList.add("jetpack-lazy-image--handled"),t.setAttribute("data-lazy-loaded","1"),t.setAttribute("src",e),t.removeAttribute("data-lazy-src"),n&&(t.setAttribute("srcset",n),t.removeAttribute("data-lazy-srcset")),r&&(t.setAttribute("sizes",r),t.removeAttribute("data-lazy-sizes")))}var o,s,c,h,a={rootMargin:"200px 0px",threshold:.01},u=0;t(document).ready(function(){e(),t("body").bind("post-load",e)})};/** + * The following is an Intersection observer polyfill which is licensed under + * the W3C SOFTWARE AND DOCUMENT NOTICE AND LICENSE and can be found at: + * https://github.com/w3c/IntersectionObserver/tree/master/polyfill + */ +/** + * Copyright 2016 Google Inc. All Rights Reserved. + * + * Licensed under the W3C SOFTWARE AND DOCUMENT NOTICE AND LICENSE. + * + * https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document + * + */ +!function(t,e){"use strict";function n(t){this.time=t.time,this.target=t.target,this.rootBounds=t.rootBounds,this.boundingClientRect=t.boundingClientRect,this.intersectionRect=t.intersectionRect||u(),this.isIntersecting=!!t.intersectionRect;var e=this.boundingClientRect,n=e.width*e.height,r=this.intersectionRect,i=r.width*r.height;this.intersectionRatio=n?i/n:this.isIntersecting?1:0}function r(t,e){var n=e||{};if("function"!=typeof t)throw new Error("callback must be a function");if(n.root&&1!=n.root.nodeType)throw new Error("root must be an Element");this._checkForIntersections=o(this._checkForIntersections.bind(this),this.THROTTLE_TIMEOUT),this._callback=t,this._observationTargets=[],this._queuedEntries=[],this._rootMarginValues=this._parseRootMargin(n.rootMargin),this.thresholds=this._initThresholds(n.threshold),this.root=n.root||null,this.rootMargin=this._rootMarginValues.map(function(t){return t.value+t.unit}).join(" ")}function i(){return t.performance&&performance.now&&performance.now()}function o(t,e){var n=null;return function(){n||(n=setTimeout(function(){t(),n=null},e))}}function s(t,e,n,r){"function"==typeof t.addEventListener?t.addEventListener(e,n,r||!1):"function"==typeof t.attachEvent&&t.attachEvent("on"+e,n)}function c(t,e,n,r){"function"==typeof t.removeEventListener?t.removeEventListener(e,n,r||!1):"function"==typeof t.detatchEvent&&t.detatchEvent("on"+e,n)}function h(t,e){var n=Math.max(t.top,e.top),r=Math.min(t.bottom,e.bottom),i=Math.max(t.left,e.left),o=Math.min(t.right,e.right),s=o-i,c=r-n;return s>=0&&c>=0&&{top:n,bottom:r,left:i,right:o,width:s,height:c}}function a(t){var e;try{e=t.getBoundingClientRect()}catch(t){}return e?(e.width&&e.height||(e={top:e.top,right:e.right,bottom:e.bottom,left:e.left,width:e.right-e.left,height:e.bottom-e.top}),e):u()}function u(){return{top:0,bottom:0,left:0,right:0,width:0,height:0}}function l(t,e){for(var n=e;n;){if(n==t)return!0;n=d(n)}return!1}function d(t){var e=t.parentNode;return e&&11==e.nodeType&&e.host?e.host:e}if("IntersectionObserver"in t&&"IntersectionObserverEntry"in t&&"intersectionRatio"in t.IntersectionObserverEntry.prototype)return void("isIntersecting"in t.IntersectionObserverEntry.prototype||Object.defineProperty(t.IntersectionObserverEntry.prototype,"isIntersecting",{get:function(){return this.intersectionRatio>0}}));var p=[];r.prototype.THROTTLE_TIMEOUT=100,r.prototype.POLL_INTERVAL=null,r.prototype.USE_MUTATION_OBSERVER=!0,r.prototype.observe=function(t){if(!this._observationTargets.some(function(e){return e.element==t})){if(!t||1!=t.nodeType)throw new Error("target must be an Element");this._registerInstance(),this._observationTargets.push({element:t,entry:null}),this._monitorIntersections(),this._checkForIntersections()}},r.prototype.unobserve=function(t){this._observationTargets=this._observationTargets.filter(function(e){return e.element!=t}),this._observationTargets.length||(this._unmonitorIntersections(),this._unregisterInstance())},r.prototype.disconnect=function(){this._observationTargets=[],this._unmonitorIntersections(),this._unregisterInstance()},r.prototype.takeRecords=function(){var t=this._queuedEntries.slice();return this._queuedEntries=[],t},r.prototype._initThresholds=function(t){var e=t||[0];return Array.isArray(e)||(e=[e]),e.sort().filter(function(t,e,n){if("number"!=typeof t||isNaN(t)||t<0||t>1)throw new Error("threshold must be a number between 0 and 1 inclusively");return t!==n[e-1]})},r.prototype._parseRootMargin=function(t){var e=t||"0px",n=e.split(/\s+/).map(function(t){var e=/^(-?\d*\.?\d+)(px|%)$/.exec(t);if(!e)throw new Error("rootMargin must be specified in pixels or percent");return{value:parseFloat(e[1]),unit:e[2]}});return n[1]=n[1]||n[0],n[2]=n[2]||n[0],n[3]=n[3]||n[1],n},r.prototype._monitorIntersections=function(){this._monitoringIntersections||(this._monitoringIntersections=!0,this.POLL_INTERVAL?this._monitoringInterval=setInterval(this._checkForIntersections,this.POLL_INTERVAL):(s(t,"resize",this._checkForIntersections,!0),s(e,"scroll",this._checkForIntersections,!0),this.USE_MUTATION_OBSERVER&&"MutationObserver"in t&&(this._domObserver=new MutationObserver(this._checkForIntersections),this._domObserver.observe(e,{attributes:!0,childList:!0,characterData:!0,subtree:!0}))))},r.prototype._unmonitorIntersections=function(){this._monitoringIntersections&&(this._monitoringIntersections=!1,clearInterval(this._monitoringInterval),this._monitoringInterval=null,c(t,"resize",this._checkForIntersections,!0),c(e,"scroll",this._checkForIntersections,!0),this._domObserver&&(this._domObserver.disconnect(),this._domObserver=null))},r.prototype._checkForIntersections=function(){var t=this._rootIsInDom(),e=t?this._getRootRect():u();this._observationTargets.forEach(function(r){var o=r.element,s=a(o),c=this._rootContainsTarget(o),h=r.entry,u=t&&c&&this._computeTargetAndRootIntersection(o,e),l=r.entry=new n({time:i(),target:o,boundingClientRect:s,rootBounds:e,intersectionRect:u});h?t&&c?this._hasCrossedThreshold(h,l)&&this._queuedEntries.push(l):h&&h.isIntersecting&&this._queuedEntries.push(l):this._queuedEntries.push(l)},this),this._queuedEntries.length&&this._callback(this.takeRecords(),this)},r.prototype._computeTargetAndRootIntersection=function(n,r){if("none"!=t.getComputedStyle(n).display){for(var i=a(n),o=i,s=d(n),c=!1;!c;){var u=null,l=1==s.nodeType?t.getComputedStyle(s):{};if("none"==l.display)return;if(s==this.root||s==e?(c=!0,u=r):s!=e.body&&s!=e.documentElement&&"visible"!=l.overflow&&(u=a(s)),u&&!(o=h(u,o)))break;s=d(s)}return o}},r.prototype._getRootRect=function(){var t;if(this.root)t=a(this.root);else{var n=e.documentElement,r=e.body;t={top:0,left:0,right:n.clientWidth||r.clientWidth,width:n.clientWidth||r.clientWidth,bottom:n.clientHeight||r.clientHeight,height:n.clientHeight||r.clientHeight}}return this._expandRectByRootMargin(t)},r.prototype._expandRectByRootMargin=function(t){var e=this._rootMarginValues.map(function(e,n){return"px"==e.unit?e.value:e.value*(n%2?t.width:t.height)/100}),n={top:t.top-e[0],right:t.right+e[1],bottom:t.bottom+e[2],left:t.left-e[3]};return n.width=n.right-n.left,n.height=n.bottom-n.top,n},r.prototype._hasCrossedThreshold=function(t,e){var n=t&&t.isIntersecting?t.intersectionRatio||0:-1,r=e.isIntersecting?e.intersectionRatio||0:-1;if(n!==r)for(var i=0;i<this.thresholds.length;i++){var o=this.thresholds[i];if(o==n||o==r||o<n!=o<r)return!0}},r.prototype._rootIsInDom=function(){return!this.root||l(e,this.root)},r.prototype._rootContainsTarget=function(t){return l(this.root||e,t)},r.prototype._registerInstance=function(){p.indexOf(this)<0&&p.push(this)},r.prototype._unregisterInstance=function(){var t=p.indexOf(this);-1!=t&&p.splice(t,1)},t.IntersectionObserver=r,t.IntersectionObserverEntry=n}(window,document),jetpackLazyImagesModule(jQuery);
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